The hormone testosterone promotes sexual desires in both males and females
        
             
        
        
        
Answer:
The curvature of the magnetic fields near the sun's equator creates pockets of the photosphere that aren't warmed by convection.
Explanation:
Hope it helps!
 
        
                    
             
        
        
        
Light is the energy source in Photosynthesis! 
Hope this helped!
 
        
                    
             
        
        
        
Answer:
B. Is what the scientists manipulate in the experiment.
Explanation:
The Independent variable is not dependent, or doesn't rely, on another variable in the experiment. So, it would make the most sense that they would manipulate the Independent so that they can watch and see how the dependent variable reacts to the manipulation, or the change, in the independent variable.